We are pleased to announce the release of BleuIO firmware v2.8.0.2.

This update focuses on improving BLE scanning reliability, increasing data throughput during high-traffic scenarios, and adding a new AT command for checking the RSSI value of an active connection.

Improved BLE Scan Stability

One of the key improvements in this release is a more stable and efficient BLE scanning architecture.

With firmware v2.8.0.2, scan result parsing and USB logging have been moved to a dedicated Scan Processing Task. This separates scan data handling from the main BLE task, allowing BleuIO to process scan responses more reliably during high-traffic spikes.

New FIFO Scan Queue

To support this improved architecture, we have introduced a new FIFO scan response queue.

This queue passes scan data from the BLE Task to the Scan Processing Task in an orderly way. By separating BLE scanning from USB logging, BleuIO can now handle incoming scan responses more efficiently and reduce the chance of missed data when many BLE devices are advertising nearby.

Increased Data Throughput

The new scan processing flow helps increase overall data throughput.

By preventing USB logging from blocking or slowing down BLE scan handling, BleuIO can maintain better performance in busy BLE environments. This is especially useful for applications that rely on continuous scanning, device discovery, beacon monitoring, or BLE traffic analysis.

Resolved Race Conditions

Firmware v2.8.0.2 also includes improvements to resource handling between different internal tasks.

Mutexes have been added to protect shared resources used by the USB, BLE, and Scan Processing tasks. This helps prevent race conditions and improves overall firmware stability.

New AT Command: AT+CONNRSSI

This release also adds a new AT command:

AT+CONNRSSI

The AT+CONNRSSI command retrieves the RSSI value from an active BLE connection. This makes it easier for developers to monitor signal strength while a connection is active.

Example in Default Mode

AT+CONNRSSI
OK

Connection 0000 rssi: -62

Example in Verbose Mode

AT+CONNRSSI
{"C":26,"cmd":"AT+CONNRSSI"}
{"A":26,"err":0,"errMsg":"ok"}
{"R":26,"conn_idx":"0000","rssi":"-60"}
{"E":26,"nol":4}

This command can be useful in applications where connection quality, distance estimation, or signal monitoring is important.

Why This Update Matters

BleuIO is used in many development and production environments where stable BLE communication is essential. Firmware v2.8.0.2 improves reliability when scanning in crowded BLE environments and provides developers with a simple way to check the RSSI of active connections.

Whether you are building BLE gateways, testing BLE devices, monitoring beacons, or developing connected products, this release provides a more stable and responsive experience.

Update Your BleuIO Firmware

We recommend updating to BleuIO firmware v2.8.0.2 to take advantage of the latest stability improvements and the new AT+CONNRSSI command.

For more information about BleuIO and available AT commands and firmware updates, please visit the BleuIO documentation.